International Journal of Minerals, Metallurgy, and Materials最新文献_第2页

Paraffin–CaCl2·6H2O dosage effects on the strength and heat transfer characteristics of cemented tailings backfill 石蜡-氯化钙-6H2O用量对固结尾矿回填强度和传热特性的影响

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-26 DOI: 10.1007/s12613-023-2700-z

Hai Li, Aibing Jin, Shuaijun Chen, Yiqing Zhao, You Ju

{"title":"Paraffin–CaCl2·6H2O dosage effects on the strength and heat transfer characteristics of cemented tailings backfill","authors":"Hai Li, Aibing Jin, Shuaijun Chen, Yiqing Zhao, You Ju","doi":"10.1007/s12613-023-2700-z","DOIUrl":"https://doi.org/10.1007/s12613-023-2700-z","url":null,"abstract":"The challenge of high temperatures in deep mining remains harmful to the health of workers and their production efficiency. The addition of phase change materials (PCMs) to filling slurry and the use of the cold storage function of these materials to reduce downhole temperatures is an effective approach to alleviate the aforementioned problem. Paraffin–CaCl2·6H2O composite PCM was prepared in the laboratory. The composition, phase change latent heat, thermal conductivity, and cemented tailing backfill (CTB) compressive strength of the new material were studied. The heat transfer characteristics and endothermic effect of the PCM were simulated using Fluent software. The results showed the following: (1) The new paraffin–CaCl2·6H2O composite PCM improved the thermal conductivity of native paraffin while avoiding the water solubility of CaCl2·6H2O. (2) The calculation formula of the thermal conductivity of CaCl2·6H2O combined with paraffin was deduced, and the reasons were explained in principle. (3) The “enthalpy-mass scale model” was applied to calculate the phase change latent heat of nonreactive composite PCMs. (4) The addition of the paraffin–CaCl2·6H2O composite PCM reduced the CTB strength but increased its heat absorption capacity. This research can give a theoretical foundation for the use of heat storage backfill in green mines.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alkyl dimethyl betaine activates the low-temperature collection capacity of sodium oleate for scheelite 烷基二甲基甜菜碱激活油酸钠对白钨矿的低温收集能力

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-26 DOI: 10.1007/s12613-023-2718-2

Xu Wang, Zhengquan Zhang, Yanfang Cui, Wei Li, Congren Yang, Hao Song, Wenqing Qin, Fen Jiao

引用次数: 0

Development and prospects of molten steel deoxidation in steelmaking process 炼钢过程中钢水脱氧的发展和前景

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-26 DOI: 10.1007/s12613-023-2740-4

Zhongliang Wang, Yanping Bao

{"title":"Development and prospects of molten steel deoxidation in steelmaking process","authors":"Zhongliang Wang, Yanping Bao","doi":"10.1007/s12613-023-2740-4","DOIUrl":"https://doi.org/10.1007/s12613-023-2740-4","url":null,"abstract":"In the long traditional process of steelmaking, excess oxygen is blown into the converter, and alloying elements are used for deoxidation. This inevitably results in excessive deoxidation of products remaining within the steel liquid, affecting the cleanliness of the steel. With the increasing requirements for steel performance, reducing the oxygen content in the steel liquid and ensuring its high cleanliness is necessary. After more than a hundred years of development, the total oxygen content in steel has been reduced from approximately 100 × 10−6 to approximately 10 × 10−6, and it can be controlled below 5 × 10−6 in some steel grades. A relatively stable and mature deoxidation technology has been formed, but further reducing the oxygen content in steel is no longer significant for improving steel quality. Our research team developed a deoxidation technology for bearing steel by optimizing the entire conventional process. The technology combines silicon–manganese predeoxidation, ladle furnace diffusion deoxidation, and vacuum final deoxidation. We successfully conducted industrial experiments and produced interstitial-free steel with natural decarbonization predeoxidation. Non-aluminum deoxidation was found to control the oxygen content in bearing steel to between 4 × 10−6 and 8 × 10−6, altering the type of inclusions, eliminating large particle Ds-type inclusions, improving the flowability of the steel liquid, and deriving a higher fatigue life. The natural decarbonization predeoxidation of interstitial-free steel reduced aluminum consumption and production costs and significantly improved the quality of cast billets.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium-ion capacitors 具有优化的高原容量和速率能力的 MOF 衍生多孔石墨碳，适用于高性能锂离子电容器

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-25 DOI: 10.1007/s12613-023-2726-2

{"title":"MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium-ion capacitors","authors":"","doi":"10.1007/s12613-023-2726-2","DOIUrl":"https://doi.org/10.1007/s12613-023-2726-2","url":null,"abstract":"<h3>Abstract</h3> The development of anode materials with high rate capability and long charge–discharge plateau is the key to improve performance of lithium-ion capacitors (LICs). Herein, the porous graphitic carbon (PGC-1300) derived from a new triply interpenetrated cobalt metal-organic framework (Co-MOF) was prepared through the facile and robust carbonization at 1300°C and washing by HCl solution. The as-prepared PGC-1300 featured an optimized graphitization degree and porous framework, which not only contributes to high plateau capacity (105.0 mAh·g−1 below 0.2 V at 0.05 A·g−1), but also supplies more convenient pathways for ions and increases the rate capability (128.5 mAh·g−1 at 3.2 A·g−1). According to the kinetics analyses, it can be found that diffusion regulated surface induced capacitive process and Li-ions intercalation process are coexisted for lithium-ion storage. Additionally, LIC PGC-1300//AC constructed with pre-lithiated PGC-1300 anode and activated carbon (AC) cathode exhibited an increased energy density of 102.8 Wh·kg−1, a power density of 6017.1 W·kg−1, together with the excellent cyclic stability (91.6% retention after 10000 cycles at 1.0 A·g−1).","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139558135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure and thermal properties of dissimilar M300–CuCr1Zr alloys by multi-material laser-based powder bed fusion 通过多材料激光粉末床熔融技术制备异种 M300-CuCr1Zr 合金的微观结构和热性能

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-11 DOI: 10.1007/s12613-023-2747-x

引用次数: 0

Processing map and dynamic recrystallization behaviours of 316LN-Mn austenitic stainless steel 316LN-Mn 奥氏体不锈钢的加工图和动态再结晶行为

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-04 DOI: 10.1007/s12613-023-2714-6

Shaolong Sheng, Yanxin Qiao, Ruzong Zhai, Mingyue Sun, Bin Xu

引用次数: 0

Effect of variations in the polar and azimuthal angles of coarse particles on the structure of drainage channels in thickened beds 粗颗粒极角和方位角的变化对加厚床层排水通道结构的影响

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-04 DOI: 10.1007/s12613-023-2680-z

Cuiping Li, Gezhong Chen, Zhu’en Ruan, Raimund Bürger, Yuan Gao, Hezi Hou, Hui Wang

{"title":"Effect of variations in the polar and azimuthal angles of coarse particles on the structure of drainage channels in thickened beds","authors":"Cuiping Li, Gezhong Chen, Zhu’en Ruan, Raimund Bürger, Yuan Gao, Hezi Hou, Hui Wang","doi":"10.1007/s12613-023-2680-z","DOIUrl":"https://doi.org/10.1007/s12613-023-2680-z","url":null,"abstract":"The 3D reconstruction and quantitative characterization of drainage channels and coarse tailings particles in a bed were conducted in this study. The influence of variations in the azimuthal angle (θ) and polar angle (φ) of coarse particles on drainage channel structure was analyzed, and the drainage mechanism of the bed was studied. Results showed that water discharge in the bed reduced the size of pores and throat channels, increasing slurry concentration. The throat channel structure was a key component of the drainage process. The φ and θ of particles changed predominantly along the length direction. The changes in φ had a cumulative plugging effect on the drainage channel and increased the difficulty of water discharge. The rake and rod formed a shear ring in the tailings bed with shear, and the θ distribution of particles changed from disorderly to orderly during the rotation process. The drainage channel was squeezed during the shearing process with the change in θ, which broke the channel structure, encouraged water discharge in the bed, and facilitated a further increase in slurry concentration. The findings of this work are expected to offer theoretical guidance for preparing high-concentration underflow in the tailings thickening process.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetics of solid-state reduction of chromite overburden 铬铁矿覆盖层固态还原动力学

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-04 DOI: 10.1007/s12613-023-2681-y

Saida Shaik, Zhiyuan Chen, Preeti Prakash Sahoo, Chenna Rao Borra

{"title":"Kinetics of solid-state reduction of chromite overburden","authors":"Saida Shaik, Zhiyuan Chen, Preeti Prakash Sahoo, Chenna Rao Borra","doi":"10.1007/s12613-023-2681-y","DOIUrl":"https://doi.org/10.1007/s12613-023-2681-y","url":null,"abstract":"The demand for alternative low-grade iron ores is on the rise due to the rapid depletion of high-grade natural iron ore resources and the increased need for steel usage in daily life. However, the use of low-grade iron ores is a constant clinical task for industry metallurgists. Direct smelting of low-grade ores consumes a substantial amount of energy due to the large volume of slag generated. This condition can be avoided by direct reduction followed by magnetic separation (to separate the high amount of gangue or refractory and metal parts) and smelting. Chromite overburden (COB) is a mine waste generated in chromite ore processing, and it mainly consists of iron, chromium, and nickel (<1wt%). In the present work, the isothermal and non-isothermal kinetics of the solid-state reduction of self-reduced pellets prepared using low-grade iron ore (COB) were thoroughly investigated via thermal analysis. The results showed that the reduction of pellets followed a first-order autocatalytic reaction control mechanism in the temperature range of 900–1100°C. The autocatalytic nature of the reduction reaction was due to the presence of nickel in the COB. The apparent activation energy obtained from the kinetics results showed that the solid-state reactions between COB and carbon were the rate-determining step in iron oxide reduction.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the oxidation resistance mechanism and tribological behaviors of multilayered TiSiN/CrVxN hard coatings 对多层 TiSiN/CrVxN 硬涂层抗氧化机理和摩擦学行为的深入研究

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-04 DOI: 10.1007/s12613-023-2655-0

Hongbo Ju, Moussa Athmani, Jing Luan, Abbas AL-Rjoub, Albano Cavaleiro, Talha Bin Yaqub, Abdelouahad Chala, Fabio Ferreira, Filipe Fernandes

{"title":"Insights into the oxidation resistance mechanism and tribological behaviors of multilayered TiSiN/CrVxN hard coatings","authors":"Hongbo Ju, Moussa Athmani, Jing Luan, Abbas AL-Rjoub, Albano Cavaleiro, Talha Bin Yaqub, Abdelouahad Chala, Fabio Ferreira, Filipe Fernandes","doi":"10.1007/s12613-023-2655-0","DOIUrl":"https://doi.org/10.1007/s12613-023-2655-0","url":null,"abstract":"In the last decades, vanadium alloyed coatings have been introduced as potential candidates for self-lubrication due to their perfect tribological properties. In this work, the influence of V incorporation on the wear performance and oxidation resistance of TiSiN/CrN film coatings deposited by direct current (DC) reactive magnetron sputtering is investigated. The results show that vanadium incorporation significantly decreases the oxidation resistance of the coatings. In general, two layers are formed during the oxidation process: i) Ti(V)O2 on top, followed by a protective layer, which is subdivided into two layers, Cr2O3 and Si-O. ii) The diffusion of V controls the oxidation of V-containing coatings. The addition of vanadium improves the wear resistance of coatings, and the wear rate decreases with increasing V content in the coatings; however, the friction coefficient is independent of the chemical composition of the coatings. The wear of the V-containing coatings is driven by polishing wear.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hot deformation behavior of novel high-strength Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca alloy 新型高强度 Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca 合金的热变形行为

IF 2.232 2区材料科学

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-04 DOI: 10.1007/s12613-023-2706-6

Hao Chen, Yanmei Yang, Conglin Hu, Gang Zhou, Hui Shi, Genzhi Jiang, Yuanding Huang, Norbert Hort, Weidong Xie, Guobing Wei

{"title":"Hot deformation behavior of novel high-strength Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca alloy","authors":"Hao Chen, Yanmei Yang, Conglin Hu, Gang Zhou, Hui Shi, Genzhi Jiang, Yuanding Huang, Norbert Hort, Weidong Xie, Guobing Wei","doi":"10.1007/s12613-023-2706-6","DOIUrl":"https://doi.org/10.1007/s12613-023-2706-6","url":null,"abstract":"The hot compression behavior of as-extruded Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca alloy was studied on a Gleeble-3500 thermal simulation machine. Experiments were conducted at temperatures ranging from 523 to 673 K and strain rates ranging from 0.001 to 1 s−1. Results showed that an increase in the strain rate or a decrease in deformation temperature led to an increase in true stress. The constitutive equation and processing maps of the alloy were obtained and analyzed. The influence of deformation temperatures and strain rates on microstructural evolution and texture was studied with the assistance of electron backscatter diffraction (EBSD). The as-extruded alloy exhibited a bimodal structure that consisted of deformed coarse grains and fine equiaxed recrystallized structures (approximately 1.57 µm). The EBSD results of deformed alloy samples revealed that the recrystallization degree and average grain size increased as the deformation temperature increased. By contrast, dislocation density and texture intensity decreased. Compressive texture weakened with the increase in the deformation temperature at the strain rate of 0.01 s−1. Most grains with {0001} planes tilted away from the compression direction (CD) gradually. In addition, when the strain rate decreased, the recrystallization degree and average grain size increased. Meanwhile, the dislocation density decreased. Texture appeared to be insensitive to the strain rate. These findings provide valuable insights into the hot compression behavior, microstructural evolution, and texture changes in the Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca alloy, contributing to the understanding of its processing-microstructure-property relationships.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":null,"pages":null},"PeriodicalIF":2.232,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139103137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0